Lewis and Clark Expedition
Apr 7 Lewis and Clark Expedition leaves Fort Mandan (on the Missouri River near what is now Washburn, North Dakota), beginning their journey to the Pacific Ocean
Eroica
Apr 7 Premiere of Ludwig van Beethoven's "Eroica" (Symphony No. 3), at the Theater an der Wien, Vienna, conducted by the composer; contemporary reviews were mixed
- Apr 27 US Marines attack shores of Tripoli
- May 4 Henry C. Overing buys 80 acres of Throggs Neck in the Bronx
- May 26 Lewis and Clark first sight the Rocky Mountains
- Jun 5 1st recorded tornado in "Tornado Alley" (Southern Illinois)
- Jun 10 First Barbary War: Tripolitania agrees to peace in war with US over the latter's refusal to make tribute payments; US pays ransom for release of prisoners and lifts naval blockade
- Jun 10 First Barbary War: Yussif Karamanli signs a treaty ending hostilities with the United States
- Jun 21 Great Stone Face, or the Profile found in New Hampshire
- Jun 30 Michigan Territory organizes
- Jul 8 American Bill Richmond knocks out Jack Holmes, Kilburn Wells, England
- Jul 26 Naples/Calabria struck by Earthquake; about 26,000 die
- Sep 4 1st edition of Batavian State Courier published
- Sep 30 Napoleon Bonaparte's army draws into the Rhine
- Oct 14 Battle of Elchingen, France defeats Austria
- Oct 18 45 women meet at Mrs Silas Lee's home in Wiscasset, Maine, organizes Female Charitable Society, one of the earliest women's clubs in America
Battle of Trafalgar
Oct 21 Battle of Trafalgar: British Admiral Horatio Nelson defeats combined French and Spanish fleet. Nelson shot and killed during battle.
- Oct 23 Sailing ship "Aeneus" sinks off Newfoundland killing 340
Lewis and Clark Reach the Pacific
Nov 7 Lewis and Clark Expedition first sights the Pacific Ocean at the mouth of the Columbia River
- Nov 11 Napoleonic Wars: Battle of Dürenstein - 8000 French troops attempted to slow the retreat of a vastly superior Russian and Austrian force.
- Nov 16 Battle at Schongrabern: Russian army stop French
- Nov 19 Lewis and Clark expedition, led by Meriwether Lewis and William Clark, reaches the Pacific Ocean, first European Americans to cross the west
- Nov 20 Ludwig van Beethoven's "Fidelio", his only opera, premieres at Vienna's Theater an der Wien
- Nov 26 Official opening of Thomas Telford's Pontcysyllte Aqueduct, carrying the Llangollen canal 126 feet above the River Dee. Longest aqueduct in the UK and highest canal aqueduct in the world.
- Dec 2 Napoleon defeats Russians & Austrians at Austerlitz
- Dec 9 Comet 3D/1805 V1 (Biela) approaches within 0.0366 AUs of Earth
- Dec 26 France & Austria signs Peace of Pressburg
- Dec 26 Pennsylvania Academy of Fine Arts established, Philadelphia
- Dec 31 End of French Republican calendar; France returns to Gregorianism
Authors
Dictators
Explorers
Outlaws
Queens
Spies